Fixture for heating and ventilating devices



FIG. 1 is a plan view of a fixture for heating and ventilating devices showing my new design, with the louvers thereof in a closed position;

FIG. 2 is a side view thereof, with the louvers in an open position;

FIG. 3 is a bottom view thereof, with the louvers in an open position; and

FIG. 4 is an end view thereof, with the louvers in an open position. 

The ornamental design for a fixture for heating and ventilating devices, as shown and described. 